System information adaptation for non-terrestrial networks

Abstract

This patent document describes, among other things, techniques, and apparatuses for providing non-terrestrial network connectivity to improve wireless network efficiency and performance. In one aspect, a method of wireless communication is disclosed. The method includes transmitting, from a network node to a user device, a block of system information that includes system information that is time varying due to at least one of movement of the network node or movement of the user device.

What is claimed is: 
     
         1 . A method of wireless communication, comprising:
 transmitting, from a network node to a user device, a block of system information that includes system information that is time varying due to at least one of movement of the network node or movement of the user device.   
     
     
         2 . The method of  claim 1 , wherein the network node is a non-terrestrial base station, and the user device is an aircraft-based UE. 
     
     
         3 . The method of  claim 1 , wherein the system information includes a position-velocity-time (PVT) information indicative a position of the non-terrestrial base station, a velocity of the non-terrestrial base station and a time at the base station. 
     
     
         4 . The method of  claim 1 , wherein the system information includes a scheduling delay value. 
     
     
         5 . The method of  claim 1 , wherein the system information includes a timing advance value. 
     
     
         6 . The method of  claim 1 , wherein the system information includes a timing drift value. 
     
     
         7 . The method of  claim 1 , wherein the block of system information comprises a system information block (SIB). 
     
     
         8 . The method of wireless communication of  claim 7 , wherein the system information block is updated over time according to:
 a predefined period based on an orbit height range; or   a predefined period based on a speed range of the non-terrestrial base station.   
     
     
         9 . The method of wireless communication of  claim 7 , wherein a modification period of the system information block is pre-defined according to an orbit height range of the non-terrestrial base station or a moving speed range of the non-terrestrial base station. 
     
     
         10 . The method of wireless communication of  claim 7 , wherein the system information block is updated over time according to a valueTag indication added to first system information block (SIB1). 
     
     
         11 . The method of wireless communication of  claim 7 , wherein the system information block is updated over time aperiodically with a corresponding indication in a short message with a bit indication. 
     
     
         12 . A network node, comprising a processor configured to:
 transmit, to a user device, a block of system information that includes system information that is time varying due to at least one of movement of the network node or movement of the user device.   
     
     
         13 . The network node of  claim 8 , wherein the network node is a non-terrestrial base station, and the user device is an aircraft-based UE. 
     
     
         14 . The network node of  claim 8 , wherein the system information includes a position-velocity-time (PVT) information indicative a position of the non-terrestrial base station, a velocity of the non-terrestrial base station and a time at the base station. 
     
     
         15 . The network node of  claim 8 , wherein the system information includes a scheduling delay value. 
     
     
         16 . The network node of  claim 8 , wherein the system information includes a timing advance value. 
     
     
         17 . The network node of  claim 8 , wherein the system information includes a timing drift value. 
     
     
         18 . The network node of  claim 8 , wherein the block of system information comprises a system information block (SIB). 
     
     
         19 . The network node of  claim 18 , wherein the system information block is updated over time according to:
 a predefined period based on an orbit height range; or   a predefined period based on a speed range of the non-terrestrial base station.   
     
     
         20 . The network node of  claim 18 , wherein a modification period of the system information block is pre-defined according to an orbit height range of the non-terrestrial base station or a moving speed range of the non-terrestrial base station.